Maybe SeeNote [1] could be what you are looking for. Only preorder now, but looks really nice. I would really like give it a go, but I don't like preorders. [1] https://www.getseenote.com
This is exactly what I want to build but not something I want to buy.
The reason is because I feel like SeeNote is overkill, like they took the elegant idea of modernizing the sticky note and added things like weather and prompts for no apparent reason.
If I could build a stripped-down version of this myself, that would be ideal. I just don't have any clue where to start.
Nobody does, because there is no open source "visionect", but there really should be. They have put in the work to make a simple stack (dev kit) for working with the tech, but you can't just borrow that stack and source cheap panels. I would say the market is wide open for someone to do what they are doing, but crowd fund it, open source the controllers, hardware, software etc